Thank you for your question. At about six weeks most restrictions on position and exercise are lifted. Trust your judgement...if it hurts, don't do it. Best wishes on your recovery.
I would follow the advice of your surgeon but I generally would not recommend that you start sleeping on your back.
Earl Stephenson, Jr, MD, DDS, FACS
I permit my patients to lay on her stomach after in abdominoplasty as soon as it is comfortable. This usually takes about 46 weeks.
After a mommy makeover it is important to have good postoperative activity and position instruction. In about 2 weeks patients are able to sleep on their side some, and at about 4 weeks sleeping on your stomach is allowed. Most of the time after six weeks restrictions on position and exercise are lifted. Let your body be your guide, and if it hurts, don't do it.
Best of Luck to you
I tell my patients that sleeping on their stomach is OK 4-6 weeks after a tummy tuck or breast surgery. If it is uncomfortable at all, I would wait. But you shouldn't be worried about affecting your surgical results if you have waited 4-6 weeks.
You will see that most of the doctors will recommend you to ask your plastic surgeon as he knows best what you had done, it is still early to sleep over your stomach a good time to begin is when swelling begin to fade and all scars are healed, this happens at 6-8 weeks. Good luck!